Commit selected value immediately (CommitOnSelChange) not working in Viewer

[SYLVIAGASTEL]

I have a Form PDF and a Combo Box, and I need to apply the changed value inmmediately for the Save Button to appear in the Viewer.

The Save button only appears if I click elsewhere on the page, outside of the combo box.

I have selected the option: "Commit selected value immediately" (CommitOnSelChange) in Combo Box Properties, but it doesn't seem to work in the Viewer.

[Joel_Geraci]

Can you be more specific? Which viewer? Embed API? Can you share the PDF?